AD 2025-08-01

22448 Federal Register / Vol. 90, No. 101 / Wednesday, May 28, 2025 / Rules and Regulations DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2025–0008; Project Identifier MCAI–2024–00563–T; Amendment 39–23014; AD 2025–08–01] RIN 2120–AA64 Airworthiness Directives; Airbus SAS Airplanes AGENCY : Federal Aviation Administration (FAA), DOT. ACTION : Final rule. SUMMARY : The FAA is adopting a new airworthiness directive (AD) for all Airbus SAS Model A321–251NX, –252NX, –253NX, –271NX, and –272NX airplanes. This AD was prompted by discovery of two bushes that had migrated on the latch shaft of an emergency overwing exit door (OWED) during accomplishment of an inspection on an in-service airplane. This AD requires repetitive detailed inspections (DETs) of the affected parts and, in case of discrepancies, modification of the affected parts, and prohibits the installation of affected parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective July 2, 2025. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of July 2, 2025. ADDRESSES : AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2025–0008; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For EASA material identified in this AD, contact EASA, Konrad-Adenauer- Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu; website easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available at regulations.gov under Docket No. FAA–2025–0008. FOR FURTHER INFORMATION CONTACT : Timothy Dowling, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone 206– 231–3667; email Timothy.P.Dowling@ faa.gov. SUPPLEMENTARY INFORMATION : Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to all Airbus SAS Model A321– 251NX, –252NX, –253NX, –271NX, and –272NX airplanes. The NPRM published in the Federal Register on January 21, 2025 (90 FR 6841). The NPRM was prompted by AD 2024–0187, dated September 25, 2024 (EASA AD 2024–0187) (also referred to as the MCAI), issued by EASA, which is the Technical Agent for the Member States of the European Union. The MCAI states during accomplishment of an inspection on an in-service airplane, two bushes were found migrated on the latch shaft of an OWED. In the NPRM, the FAA proposed to require repetitive DETs of the affected parts and, in case of discrepancies, modification of the affected parts, and to prohibit the installation of affected parts, as specified in EASA AD 2024– 0187. The FAA is issuing this AD to address bush migration on the latch shaft. The unsafe condition, if not addressed, could affect the fatigue life of the lower beam of the OWED and, consequently, the structural integrity of the airplane. You may examine the MCAI in the AD docket at regulations.gov under Docket No. FAA–2025–0008. Discussion of Final Airworthiness Directive Comments The FAA received comments from an individual commenter who supported the NPRM without change. Conclusion This product has been approved by the aviation authority of another country and is approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA reviewed the relevant data, considered the comment received, and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on this product. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. None of the changes will increase the economic burden on any operator. Material Incorporated by Reference Under 1 CFR Part 51 EASA AD 2024–0187 specifies procedures for repetitive DETs for discrepancies of the affected parts and, in case of discrepancies, modification of discrepant parts. Accomplishment of the modification terminates the repetitive inspections. Discrepancies include any signs of bush migration or deterioration of the sealant between the bush and latch bracket. EASA AD 2024– 0187 also prohibits the installation of affected parts. This material is reasonably available because the interested parties have access to it through their normal course of business or by the means identified in the ADDRESSES section. Costs of Compliance The FAA estimates that this AD affects 284 airplanes of U.S. registry. The FAA estimates the following costs to comply with this AD: E STIMATED C OSTS FOR R EQUIRED A CTIONS Labor cost Parts cost Cost per product Cost on U.S. operators 3 work-hours × $85 per hour = $255, per inspection cycle .......... $0 $255 $72,420, per inspection cycle. The FAA estimates the following costs to do any on-condition action that would be required based on the results of any required actions. The FAA has no way of determining the number of VerDate Sep<11>2014 15:49 May 27, 2025 Jkt 265001 PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 E:\FR\FM\28MYR1.SGM 28MYR1 khammond on DSK9W7S144PROD with RULES

22449 Federal Register / Vol. 90, No. 101 / Wednesday, May 28, 2025 / Rules and Regulations aircraft that might need this on- condition action: E STIMATED C OSTS OF O N -C ONDITION A CTIONS Labor cost Parts cost Cost per product 51 work-hours × $85 per hour = $4,335 ..................................................................................................... $2,150 $6,485 Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. Subtitle VII: Aviation Programs, describes in more detail the scope of the Agency’s authority. The FAA is issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: General requirements. Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings This AD will not have federalism implications under Executive Order 13132. This AD will not have a substantial direct effect on the States, on the relationship between the national government and the States, or on the distribution of power and responsibilities among the various levels of government. For the reasons discussed above, I certify that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866, (2) Will not affect intrastate aviation in Alaska, and (3) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES ■ 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] ■ 2. The FAA amends § 39.13 by adding the following new airworthiness directive 2025–08–01 Airbus SAS: Amendment 39– 23014; Docket No. FAA–2025–0008; Project Identifier MCAI–2024–00563–T. (a) Effective Date This airworthiness directive (AD) is effective July 2, 2025. (b) Affected ADs None. (c) Applicability This AD applies to all Airbus SAS Model A321–251NX, –252NX, –253NX, –271NX, and –272NX airplanes, certificated in any category. (d) Subject Air Transport Association (ATA) of America Code 52, Doors. (e) Unsafe Condition This AD was prompted by discovery of two bushes that had migrated on the latch shaft of an emergency overwing exit door (OWED) during accomplishment of an inspection on an in-service airplane. The FAA is issuing this AD to address bush migration on the latch shaft. The unsafe condition, if not addressed, could affect the fatigue life of the lower beam of the OWED and, consequently, the structural integrity of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requirements Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency AD 2024–0187, dated September 25, 2024 (EASA AD 2024–0187). (h) Exceptions to EASA AD 2024–0187 (1) Where EASA AD 2024–0187 refers to its effective date, this AD requires using the effective date of this AD. (2) Where paragraph (2) of EASA AD 2024– 0187 states ‘‘discrepancies, as defined in the ISB,’’ this AD requires replacing that text with ‘‘any signs of bush migration or deterioration of the sealant between the bush and latch bracket.’’ (3) This AD does not adopt the ‘‘Remarks’’ section of EASA AD 2024–0187. (i) No Reporting Requirement Although the material referenced in EASA AD 2024–0187 specifies to submit certain information to the manufacturer, this AD does not include that requirement. (j) Additional AD Provisions The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, AIR–520, Continued Operational Safety Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or responsible Flight Standards Office, as appropriate. If sending information directly to the manager of the Continued Operational Safety Branch, send it to the attention of the person identified in paragraph (k) of this AD and email to: AMOC@faa.gov. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the responsible Flight Standards Office. (2) Contacting the Manufacturer: For any requirement in this AD to obtain instructions from a manufacturer, the instructions must be accomplished using a method approved by the Manager, AIR–520, Continued Operational Safety Branch, FAA; or EASA; or Airbus SAS’s EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA- authorized signature. (3) Required for Compliance (RC): Except as required by paragraph (i) and (j)(2) of this AD, if any material contains procedures or tests that are identified as RC, those procedures and tests must be done to comply with this AD; any procedures or tests that are not identified as RC are recommended. Those procedures and tests that are not identified as RC may be deviated from using accepted methods in accordance with the operator’s maintenance or inspection program without obtaining approval of an AMOC, provided the procedures and tests identified as RC can be done and the airplane can be put back in an airworthy condition. Any substitutions or changes to procedures or tests identified as RC require approval of an AMOC. (k) Additional Information For more information about this AD, contact Timothy Dowling, Aviation Safety Engineer, FAA, 2200 South 216th St., Des Moines, WA 98198; phone 206–231–3667; email Timothy.P.Dowling@faa.gov. VerDate Sep<11>2014 15:49 May 27, 2025 Jkt 265001 PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 E:\FR\FM\28MYR1.SGM 28MYR1 khammond on DSK9W7S144PROD with RULES

22450 Federal Register / Vol. 90, No. 101 / Wednesday, May 28, 2025 / Rules and Regulations (l) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference of the material listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this material as applicable to do the actions required by this AD, unless this AD specifies otherwise. (i) European Union Aviation Safety Agency (EASA) AD 2024–0187, dated September 25, 2024. (ii) [Reserved] (3) For EASA material identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221 8999 000; email ADs@easa.europa.eu; website easa.europa.eu. You may find this material on the EASA website at ad.easa.europa.eu. (4) You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. (5) You may view this material at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ ibr-locations or email fr.inspection@nara.gov. Issued on April 7, 2025. Peter A. White, Deputy Director, Integrated Certificate Management Division, Aircraft Certification Service. [FR Doc. 2025–09505 Filed 5–27–25; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2024–2717; Project Identifier MCAI–2024–00147–T; Amendment 39–23011; AD 2025–07–09] RIN 2120–AA64 Airworthiness Directives; Bombardier, Inc., Airplanes AGENCY : Federal Aviation Administration (FAA), DOT. ACTION : Final rule. SUMMARY : The FAA is superseding Airworthiness Directive (AD) 2020–19– 13, which applied to certain Bombardier, Inc., Model CL–600–1A11 (600), CL–600–2A12 (601), and CL–600– 2B16 (601–3A, 601–3R, and 604 Variants) airplanes. AD 2020–19–13 required a check to identify the manufacturer and part number of the portable oxygen bottle installation, and, if necessary, modification of the portable oxygen bottle installation. This AD continues to require the actions specified in AD 2020–19–13 and expands the applicability. This AD was prompted by a report indicating that the portable oxygen bottle installation’s upper bracket latch assembly can catch on the pressure gauge tube or on the pressure gauge bezel of the portable oxygen bottle. This AD was also prompted by the determination that additional airplanes may be subject to the unsafe condition. The FAA is issuing this AD to address the unsafe condition on these products. DATES : This AD is effective July 2, 2025. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of July 2, 2025. ADDRESSES : AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA–2024–2717; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory continuing airworthiness information (MCAI), any comments received, and other information. The address for Docket Operations is U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE, Washington, DC 20590. Material Incorporated by Reference: • For Bombardier material identified in this AD, contact Bombardier Business Aircraft Customer Response Center, 400 Co ˆ te-Vertu Road West, Dorval, Que ´bec H4S 1Y9, Canada; telephone 514–855– 2999; email ac.yul@ aero.bombardier.com; website bombardier.com. • You may view this material at the FAA, Airworthiness Products Section, Operational Safety Branch, 2200 South 216th St., Des Moines, WA. For information on the availability of this material at the FAA, call 206–231–3195. It is also available at regulations.gov under Docket No. FAA–2024–2717. FOR FURTHER INFORMATION CONTACT : Brenda Buitrago, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516–228–7300; email n. SUPPLEMENTARY INFORMATION : Background The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2020–19–13, Amendment 39–21256 (85 FR 60887, dated September 29, 2020) (AD 2020– 19–13). AD 2020–19–13 applied to certain Bombardier, Inc., Model CL– 600–1A11 (600), CL–600–2A12 (601), and CL–600–2B16 (601–3A, 601–3R, and 604 Variants) airplanes. AD 2020– 19–13 required a check to identify the manufacturer and part number of the portable oxygen bottle installation, and, if necessary, modification of the portable oxygen bottle installation. The FAA issued AD 2020–19–13 to address the portable oxygen bottle installation’s upper bracket latch assembly catching on the pressure gauge bezel of the portable oxygen bottle, which could prevent fast and easy access to the portable oxygen bottle in an emergency situation. The NPRM published in the Federal Register on December 31, 2024 (89 FR 107069). The NPRM was prompted by AD CF–2024–09, dated February 29, 2024, issued by Transport Canada, which is the aviation authority for Canada (Transport Canada AD CF– 2024–09) (also referred to as the MCAI). The MCAI states four Model CL–600– 2B16 airplanes have been added to the applicability. In the NPRM, the FAA proposed to continue to require the actions specified in AD 2020–19–13. In the NPRM, the FAA also proposed to add airplanes to the applicability. The FAA is issuing this AD to address the unsafe condition on these products. You may examine the MCAI in the AD docket at regulations.gov under Docket No. FAA–2024–2717. Discussion of Final Airworthiness Directive Comments The FAA received no comments on the NPRM or on the determination of the cost to the public. Conclusion This product has been approved by the aviation authority of another country and is approved for operation in the United States. Pursuant to the FAA’s bilateral agreement with this State of Design Authority, it has notified the FAA of the unsafe condition described in the MCAI referenced above. The FAA reviewed the relevant data and determined that air safety requires adopting this AD as proposed. Accordingly, the FAA is issuing this AD to address the unsafe condition on this product. Except for minor editorial changes, this AD is adopted as proposed in the NPRM. None of the changes will increase the economic burden on any operator. Material Incorporated by Reference Under 1 CFR Part 51 The FAA reviewed the following material: • Bombardier Service Bulletin 600– 0772, Revision 01, dated June 28, 2023; VerDate Sep<11>2014 15:49 May 27, 2025 Jkt 265001 PO 00000 Frm 00010 Fmt 4700 Sfmt 4700 E:\FR\FM\28MYR1.SGM 28MYR1 khammond on DSK9W7S144PROD with RULES